Wrench



March 10, 1925- 1,528,892

G. w. PIGOTT ET AL WRENCH Filed March 24, 1924 Patented Mar. 10, 1925.

UNITED STATES PATENT OFFICE.

GEORGE W. PIGO'IT, CHARLES P. PIGOTT, REUBEN H. PIGOTT, AND LEEMAN I1.SHINN,

OF WEST UNION, WEST VIRGINIA.

WRENCH.

Application filed March 24, 1924. Serial No. 701,572.

To all whom it may concern:

Be it known that we, Gnonon W. Preo'r'r, CHARLES P. Prco'r'r, REUBEN H.Proo'rr. and Lauren L. SI-IINN, citizens of the United States, residingat test Union, in the county of Doddridge and State of lVest Virginia,have invented certain new and useiul Improvements in a Wrench, of whichthe following is a specification, reference being had therein to theaccompanying drawings.

This invention relates to a wrench, and the object of the invention isthe construction of a simple and eilicient wrench tor-med, preferably,in one piece, and including elements whereby nuts ot' dii'lierent sizecan be easily clamped and screwed upon or unscrewed otl bolts, and thelike.

lVith the foregoing and other objects in view, our invention (omprisescertain novel combinations, constructions and arrangements of parts aswill be hereinafter described, illustrated in the accompanying drawings,and more particularly pointed out in the appended claim.

In the drawing:

Figure 1 represents a view in elevation of a wrench constructed inaccordance with the present invention.

Figure 2 is a fragmentary perspective view of the wrench.

Referring to the drawings by numerals, l is the handle, upon one sid andone edge of which is formed a scale 2, which scale is very useful asaffording a rule for measurement, by the user of the wrench.

Integral with the handle 1 is a head 3, and integral with head 3 is aprimary jaw t and an auxiliary jaw 5. These jaws are provided with aconcave, inner surface 6, against which nuts hear, when the wrench is inoperation.

{in the outer end of primary jaw t is formed right-angled portion 7, andon the outer end of portion 7, and extending slightly inwardly is a camportion 8. Cam portion 8 is serrated or toothed on its outer face formore efliciently engaging nuts 9 and 10 (dotted lines).

It will, therefore, be. seen that we have provided a Wrench with anauxiliary jaw that is of a slightly curved structure Whereas the primaryjaw is provided with an inwe. dly-extending portion terminating in a camfor engaging and clamping the nuts when it is desired to screw anutupon, or unscrew the same from a bolt.

It is to be noted that the inner face 11 ot. the port-ion T is straightand fiat so that it constitutes one of three surfaces that will snuglybind against nut 10, whereby the nut is etlicicntly held for operation.The three sur races are the concave surface 6, the toothed surface ofcum portion 8 and the straight surface 11. However, the nut 10 can beeasily removed from the wrench by reversing the movement; that is, byunscrewing the nut. as the unscrewing action lessens the clampingpressure on the nut within the socket, constituted by the severalsurtaccs just specified.

lVhile we have described the preferred embodiment of our invention, andhave illustrated the same in the accompanying drawing, ertain minorchanges or alterations appear to one skilled in the art to wh h thisinvention relates, during the e.\1- teusi e manufacture oi the same andwe. therefore, reserve the right to n eke such alterations or changesshall Fairly fall within the scopeoi" the appended claim.

ll iat we claim is:

1' cle ot maiurtacture, a wrench iandle provided with a sub- Ushapedhead integral at its cenh a uling across the outer end parallel with thelongitudinal axes of the handle, said primary jaw provided with astraight portion at right angles to said jaw and handle, said straightportion provided with a straight. tla t wit-engaging inner face forsnugly receiving an entire side oi? a nut, and a cam portion at theouter end oi? said straight portion, substantially as shown anddescribed.

In testimony whereoi we hereunto afiix our signatures.

GEORGE W. PIGOTT. CHARLES P. PIGOTT. REUBEN H. PIGOTT. LEEMAN L. SHINN.

